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    DEVICES FOR REDUNDANT FRAME CODING AND DECODING
    41.
    发明申请
    DEVICES FOR REDUNDANT FRAME CODING AND DECODING 有权
    用于冗余帧编码和解码的设备

    公开(公告)号：US20130191121A1

    公开(公告)日：2013-07-25

    申请号：US13743797

    申请日：2013-01-17

    Applicant: Qualcomm Incorporated

    Inventor： Vivek Rajendran ,  Venkatesh Krishnan

    IPC: G10L19/00

    CPC classification number: G10L19/00 ,  G10L19/005 ,  G10L19/09 ,  G10L19/10 ,  G10L19/12 ,  G10L19/22 ,  G10L25/21

    Abstract: A method for redundant frame coding by an electronic device is described. The method includes determining an adaptive codebook energy and a fixed codebook energy based on a frame. The method also includes coding a redundant version of the frame based on the adaptive codebook energy and the fixed codebook energy. The method further includes sending a subsequent frame.

    Abstract translation: 描述用于电子设备的冗余帧编码的方法。 该方法包括基于帧确定自适应码本能量和固定码本能量。 该方法还包括基于自适应码本能量和固定码本能量对帧的冗余版本进行编码。 该方法还包括发送后续帧。

    High-band signal modeling
    44.
    发明授权
    High-band signal modeling 有权

    公开(公告)号：US10163447B2

    公开(公告)日：2018-12-25

    申请号：US14568359

    申请日：2014-12-12

    Applicant: QUALCOMM Incorporated

    Inventor： Venkatesh Krishnan ,  Venkatraman S. Atti

    IPC: G10L21/038 ,  G10L19/02 ,  G10L19/04 ,  G10L21/0388 ,  G10L19/08

    Abstract: A method includes filtering, at a speech encoder, an audio signal into a first group of sub-bands within a first frequency range and a second group of sub-bands within a second frequency range. The method also includes generating a harmonically extended signal based on the first group of sub-bands. The method further includes generating a third group of sub-bands based, at least in part, on the harmonically extended signal. The third group of sub-bands corresponds to the second group of sub-bands. The method also includes determining a first adjustment parameter for a first sub-band in the third group of sub-bands or a second adjustment parameter for a second sub-band in the third group of sub-bands. The first adjustment parameter is based on a metric of a first sub-band in the second group of sub-bands, and the second adjustment parameter is based on a metric of a second sub-band in the second group of sub-bands.

    Systems and methods of performing noise modulation and gain adjustment
    46.
    发明授权
    Systems and methods of performing noise modulation and gain adjustment 有权

    公开(公告)号：US09601125B2

    公开(公告)日：2017-03-21

    申请号：US14012749

    申请日：2013-08-28

    Applicant: QUALCOMM Incorporated

    Inventor： Venkatraman Srinivasa Atti ,  Venkatesh Krishnan

    IPC: G10L21/038 ,  G10L19/032 ,  G10L19/06

    CPC classification number: G10L19/167 ,  G10L19/032 ,  G10L19/035 ,  G10L19/06 ,  G10L21/038 ,  G10L2019/0003 ,  H03G3/301 ,  H03G3/3089

    Abstract: A method includes receiving a first value of a mixing factor. The first value corresponds to a first portion of an audio signal received at an audio encoder. The method includes receiving a second value of the mixing factor. The second value corresponds to a second portion of the audio signal. The method also includes generating a third value of the mixing factor at least partially based on the first value and the second value and mixing an excitation signal with modulated noise based on the third value. Another method includes determining a first set of spectral frequency values corresponding to an audio signal and determining a second set of spectral frequency values that approximates the first set of spectral frequency values. A gain value corresponding to at least a portion of the audio signal is adjusted based on a difference between the first set and the second set.

    Systems and methods for determining pitch pulse period signal boundaries
    49.
    发明授权
    Systems and methods for determining pitch pulse period signal boundaries 有权
    用于确定音调脉冲周期信号边界的系统和方法

    公开(公告)号：US09208775B2

    公开(公告)日：2015-12-08

    申请号：US14015996

    申请日：2013-08-30

    Applicant: QUALCOMM Incorporated

    Inventor： Subasingha Shaminda Subasingha ,  Venkatesh Krishnan ,  Vivek Rajendran ,  Stephane Pierre Villette

    IPC: G10L19/10 ,  G10L13/02 ,  G10L25/90 ,  G10L19/005

    CPC classification number: G10L13/02 ,  G10L19/005 ,  G10L19/10 ,  G10L25/90

    Abstract: A method for determining pitch pulse period signal boundaries by an electronic device is described. The method includes obtaining a signal. The method also includes determining a first averaged curve based on the signal. The method further includes determining at least one first averaged curve peak position based on the first averaged curve and a threshold. The method additionally includes determining pitch pulse period signal boundaries based on the at least one first averaged curve peak position. The method also includes synthesizing a speech signal.

    Abstract translation: 描述了一种通过电子设备确定音调脉冲周期信号边界的方法。 该方法包括获得信号。 该方法还包括基于该信号来确定第一平均曲线。 该方法还包括基于第一平均曲线和阈值确定至少一个第一平均曲线峰值位置。 该方法还包括基于至少一个第一平均曲线峰值位置来确定音调脉冲周期信号边界。 该方法还包括合成语音信号。

    SYSTEMS AND METHODS OF ENERGY-SCALED SIGNAL PROCESSING
    50.
    发明申请
    SYSTEMS AND METHODS OF ENERGY-SCALED SIGNAL PROCESSING 有权
    能量信号处理系统与方法

    公开(公告)号：US20150106107A1

    公开(公告)日：2015-04-16

    申请号：US14512892

    申请日：2014-10-13

    Applicant: QUALCOMM Incorporated

    Inventor： Venkatraman S. Atti ,  Venkatesh Krishnan ,  Stephane Pierre Villette ,  Vivek Rajendran

    IPC: G10L19/035

    CPC classification number: G10L19/035 ,  G10L19/0204 ,  G10L19/08 ,  G10L19/083 ,  G10L21/038

    Abstract: A method includes determining a first modeled high-band signal based on a low-band excitation signal of an audio signal, where the audio signal includes a high-band portion and a low-band portion. The method also includes determining scaling factors based on energy of sub-frames of the first modeled high-band signal and energy of corresponding sub-frames of the high-band portion of the audio signal. The method includes applying the scaling factors to a modeled high-band excitation signal to determine a scaled high-band excitation signal and determining a second modeled high-band signal based on the scaled high-band excitation signal. The method includes determining gain parameters based on the second modeled high-band signal and the high-band portion of the audio signal.

    Abstract translation: 一种方法包括基于音频信号的低频带激励信号来确定第一建模的高频带信号，其中音频信号包括高频带部分和低频带部分。 该方法还包括基于第一建模高频带信号的子帧的能量和音频信号的高频带部分的对应子帧的能量来确定缩放因子。 该方法包括将缩放因子应用于建模的高频带激励信号以确定缩放的高频带激励信号，并且基于经缩放的高频带激励信号确定第二建模的高频带信号。 该方法包括基于第二建模的高频带信号和音频信号的高频带部分确定增益参数。

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